 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.update.internal.ui.wizards;

 import java.net.MalformedURLException ;
 import java.net.URL ;

 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.dialogs.StatusDialog;
 import org.eclipse.osgi.util.NLS;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.update.internal.ui.URLCoder;
 import org.eclipse.update.internal.ui.UpdateUI;
 import org.eclipse.update.internal.ui.UpdateUIMessages;
 import org.eclipse.update.internal.ui.model.SiteBookmark;
 import org.eclipse.update.internal.ui.model.UpdateModel;


 public class NewUpdateSiteDialog extends StatusDialog {
     
     protected Text name;
     protected Text url;
     private Button okButton;
     private boolean enableOK = false;
     private SiteBookmark[] siteBookmarks;
     /**
      * @param parentShell
      */
     public NewUpdateSiteDialog(Shell parentShell) {
         super(parentShell);
         enableOK = false;
     }
     
     public NewUpdateSiteDialog(Shell parentShell, SiteBookmark[] siteBookmarks) {
         
         this(parentShell);
         this.siteBookmarks = siteBookmarks;
     }
     
     public NewUpdateSiteDialog(Shell parentShell, boolean enableOkButtons) {
         super(parentShell);
         enableOK = enableOkButtons;
     }
     
     public NewUpdateSiteDialog(Shell parentShell, boolean enableOkButtons, SiteBookmark[] siteBookmarks) {
         this(parentShell, enableOkButtons);
         this.siteBookmarks = siteBookmarks;
     }
     
     protected void createButtonsForButtonBar(Composite parent) {
         
         //super.createButtonBar(parent);
 okButton = createButton(
                 parent,
                 IDialogConstants.OK_ID,
                 IDialogConstants.OK_LABEL,
                 true);
         createButton(
             parent,
             IDialogConstants.CANCEL_ID,
             IDialogConstants.CANCEL_LABEL,
             false);
         
         okButton.setEnabled(enableOK);
         
     }
     
     protected Control createDialogArea(Composite parent) {
         Composite composite = new Composite(parent, SWT.NONE);
         GridLayout layout = new GridLayout();
         layout.numColumns = 2;
         composite.setLayout(layout);
         GridData data = new GridData();
         data.widthHint = 350;
         composite.setLayoutData(data);
         
         Label label = new Label(composite, SWT.NONE);
         label.setText(UpdateUIMessages.NewUpdateSiteDialog_name);
         
         name = new Text(composite, SWT.BORDER);
         name.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
         name.addModifyListener(new ModifyListener() {
             public void modifyText(ModifyEvent e) {
                 verifyComplete();
             }
         });
         
         label = new Label(composite, SWT.NONE);
         label.setText(UpdateUIMessages.NewUpdateSiteDialog_url);
         
         url = new Text(composite, SWT.BORDER);
         url.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
         url.addModifyListener(new ModifyListener() {
             public void modifyText(ModifyEvent e) {
                 verifyComplete();
             }
         });
         
         initializeFields();
         Dialog.applyDialogFont(composite);
         return composite;
     }
     
     protected void initializeFields() {
         url.setText("http://"); //$NON-NLS-1$
 }
     
     protected void okPressed() {
         update();
         super.okPressed();
     }

     protected void update() {
         try {
             UpdateModel model = UpdateUI.getDefault().getUpdateModel();
             SiteBookmark bookmark = new SiteBookmark(name.getText(), new URL (url.getText()), false);
             bookmark.setSelected(true);
             model.addBookmark(bookmark);
             model.saveBookmarks();
         } catch (MalformedURLException e) {
         }
     }
     
     private void verifyComplete() {
             
         if (okButton == null) {
             return;
         }
         
         if (name.getText().trim().length() == 0 || url.getText().trim().length() == 0) {
             okButton.setEnabled(false);
             this.updateStatus( new Status(IStatus.ERROR, UpdateUI.getPluginId(), IStatus.OK, UpdateUIMessages.NewUpdateSiteDialog_error_nameOrUrlNotSpecified, null));
             return;
         }
     
         try {
             URL newURL = new URL (URLCoder.decode(url.getText().trim()));
             if (url.getEditable()) {
                 okButton.setEnabled(!newURL.getProtocol().equals("file")); //$NON-NLS-1$
 if (newURL.getProtocol().equals("file")) { //$NON-NLS-1$
 okButton.setEnabled(false);
                     this.updateStatus( new Status(IStatus.ERROR, UpdateUI.getPluginId(), IStatus.OK, UpdateUIMessages.NewUpdateSiteDialog_error_incorrectUrl, null));
                     return;
                 }
             }
         } catch (Exception e) {
             okButton.setEnabled(false);
             this.updateStatus( new Status(IStatus.ERROR, UpdateUI.getPluginId(), IStatus.OK, UpdateUIMessages.NewUpdateSiteDialog_error_incorrectUrl, null));
             return;
         }
         
         if (isDuplicate()) {
             return;
         } else {
             okButton.setEnabled(true);
             this.updateStatus( new Status(IStatus.OK, UpdateUI.getPluginId(), IStatus.OK, "", null)); //$NON-NLS-1$
 }
         
         
     }
     
     private boolean isDuplicate() {
         
         if ( siteBookmarks == null)
             return false;
         
         for( int i = 0; i < this.siteBookmarks.length; i++) {
             if ( !isCurrentlyEditedSiteBookmark(i)) {
                 if (siteBookmarks[i].getLabel().equals(name.getText().trim())) {
                     okButton.setEnabled(false);
                     this.updateStatus( new Status(IStatus.ERROR, UpdateUI.getPluginId(), IStatus.OK, UpdateUIMessages.NewUpdateSiteDialog_error_duplicateName, null));
                     return true;
                 } else if (siteBookmarks[i].getURL().toString().trim().equals(url.getText().trim())) {
                     okButton.setEnabled(false);
                     this.updateStatus( new Status(IStatus.ERROR, UpdateUI.getPluginId(), IStatus.OK, NLS.bind(UpdateUIMessages.NewUpdateSiteDialog_error_duplicateUrl, siteBookmarks[i].getLabel()), null));
                     return true;
                 }
             }
         }
         return false;
     }
     
     protected boolean isCurrentlyEditedSiteBookmark( int index) {
         return false;
     }
     
     
     protected void updateButtonsEnableState(IStatus status) {
         if (okButton != null && !okButton.isDisposed())
             okButton.setEnabled(!status.matches(IStatus.ERROR));
     }
     


 }

